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STOCK-BASED COMPENSATION PLANS (Tables)

6 Months Ended

Jun. 30, 2020

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Schedule of granted stock options, Black-Scholes option-pricing model assumptions

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​	​	​	​	​	​	​	​
​	​	Six Months Ended					​
​	​	June 30,					​
​	​	2020			2019
Dividend yield	​	​	3.03	%	​	2.86	%
Expected volatility	​	​	23.11	​	​	23.80	​
Risk-free interest rate	​	​	1.47	​	​	2.52	​
Expected option life	​	​	6.0	years	​	6.0	years

Schedule of company's stock options

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Weighted

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Weighted

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Average

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Number

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Average

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Remaining

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Aggregate

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of

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Exercise

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Contractual

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​

Intrinsic

(Dollars in thousands, except per share amounts)

Options

Price

Life

Value

Outstanding, January 1, 2020

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110,660

$

35.71

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Granted

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69,360

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34.87

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Outstanding, June 30, 2020

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180,020

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35.39

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8.7

years

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$

—

Vested and Exercisable, June 30, 2020

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52,681

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35.85

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8.0

years

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—

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​	​	​	​
Number of	​	Exercise
Options		Price
69,360	​	$	34.87
63,267	​	​	35.35
47,393	​	​	36.19
180,020	​	​	​

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Restricted Stock Awards

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Schedule of status of unvested restricted stock

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​	​	​	​	​	​
​	​	​	​	Weighted
​	​	​	​	Average Grant-Date
​		Shares		Fair Value
Unvested, January 1, 2020		293,717	​	$	30.37
Granted		86,428	​	​	31.65
Vested		(103,302)	​	​	28.92
Forfeited		(5,993)	​	​	32.15
Unvested, June 30, 2020		270,850	​	​	31.29

Restricted Stock Units

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Schedule of status of unvested restricted stock

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​	​	​	​	​	​
​	​	​	​	Weighted
​	​	​	​	Average Grant-Date
​		Shares		Fair Value
Unvested, January 1, 2020	​	85,342		$	29.59
Granted	​	26,556	​	​	32.13
Reinvested dividends	​	1,863	​	​	29.96
Forfeited	​	(6,623)	​	​	28.68
Vested	​	(15,222)	​	​	25.21
Unvested, June 30, 2020	​	91,916		​	31.12

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- Definition

Tabular disclosure of the changes in outstanding nonvested shares.

+ References

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-Publisher FASB
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-Topic 718
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Tabular disclosure for stock option plans. Includes, but is not limited to, outstanding awards at beginning and end of year, grants, exercises, forfeitures, and weighted-average grant date fair value.

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-Name Accounting Standards Codification
-Topic 718
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